Reference Guide

Table Of Contents
When creating an access list, the sequence of the filters is important. You have a choice of assigning
sequence numbers to the filters as you enter them, or the Dell Networking operating system (OS) assigns
numbers in the order the filters are created. The sequence numbers are listed in the display output of the
show config and show ip accounting access-list commands.
Ingress and egress Hot Lock ACLs allow you to append or delete new rules into an existing ACL (already
written into CAM) without disrupting traffic flow. Existing entries in the CAM are shuffled to
accommodate the new entries. Hot lock ACLs are enabled by default and support both standard and
extended ACLs and on all platforms.
NOTE: Hot lock ACLs are supported for Ingress ACLs only.
CAM Allocation and CAM Optimization
The S5000 supports the CAM allocation and CAM optimization.
For more information, refer to the following:
User Configurable CAM Allocation
CAM Optimization
User Configurable CAM Allocation
Allocate space for IPV6 ACLs by using the cam-acl command in CONFIGURATION mode.
The CAM space is allotted in filter processor (FP) blocks. The total space allocated must equal 13 FP
blocks. (There are 16 FP blocks, but System Flow requires three blocks that cannot be reallocated.)
The default CAM allocation settings for ingress ACL and QoS regions on an S5000 are:
L2 ACL(l2acl): 4
L3 ACL (ipv4acl): 4
IPv6 L3 ACL (ipv6acl): 0
L3 QoS (ipv4qos): 2
L2 QoS (l2qos): 1
L2PT (l2pt): 0
MAC ACLs (ipmacacl): 0
ECFMACL (ecfmacl): 0
VMAN QoS (vman-qos): 0
VMAN Dual QoS (vman-dual-qos): 0
FCoE ACL (fcoeacl): 2
iSCSI Opt ACL (iscsioptacl): 0
Enter the ipv6acl allocation as a factor of 2 (2, 4, 6, 8, 10). All other profile allocations can use either
even-numbered or odd-numbered ranges.
Save the new CAM settings to the startup-config (use write-mem or copy run start) then reload the
system for the new settings to take effect.
For more information, refer to Re-allocating CAM for Ingress ACLs and QoS.
Access Control Lists (ACLs)
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